May 8, 2025
William Blair Investment Management: Who We Are

Watch this video online:
https://youtu.be/WXuiVnObTpk?si=6VYPMhNvUVU0LHW3
At William Blair Investment Management, our broad-based private partnership structure contributes to our investment professionals’ long tenures and allows for active, long-term decision-making focused on better client outcomes.
Transcript
At William Blair Investment Management, our broad-based private partnership structure contributes to our investment professionals’ long tenures and allows for active, long-term decision-making focused on better client outcomes.
100%
Active-employee owned
This and all subsequent data is as of December 31, 2024.
333
Employees
55
Partners
24
Countries in which we have clients
9.5 years
Average client tenure
Entrepreneurial, investment-led, and client-focused culture
Long-term expertise across asset classes globally
Demonstrated track record of value-added performance
We are passionate about the profession of investment management. Our investment teams are solely focused on active management and employ disciplined, analytical research processes across a wide range of strategies, including U.S. equity, non-U.S. equity, and emerging markets debt.
$71.6B
Total assets under management
35%
of our AUM is from clients with multiple strategies
30
Portfolio managers
53
Dedicated Investment Management analysts
26 years
Average industry experience for portfolio managers
90%
Portfolio managers and analysts who have earned advanced degrees or are CFA charterholders
We are committed to building client relationships that last year after year rather than quarter to quarter.
We serve consultants, foundations and endowments, public funds, corporations, Taft-Hartley plans, financial institutions, and financial advisors.
Why we invest shapes how we invest—and we are continuously evolving the business and our investment processes to meet clients’ needs while remaining true to our core investment tenets.
Filmed March 2025
The views and opinions expressed herein are those of the speaker(s) as of the date of publication, are subject to change without notice as economic and market conditions dictate, and may not reflect the views and opinions of other investment teams within William Blair. Factual information has been obtained from sources we believe to be reliable, but its accuracy, completeness, or interpretation cannot be guaranteed. This material may include estimates, outlooks, projections, and other forward-looking statements. Due to a variety of factors, actual events may differ significantly from those presented. This video has been provided for informational purposes only and should not be considered as investment advice or a recommendation of any particular strategy or investment product, or as an offer to buy or sell any securities or related financial instruments in any jurisdiction. Investment advice and recommendations can be provided only after careful consideration of an investor’s objectives, guidelines, and restrictions. Investing involves risks, including the possible loss of principal. Past performance is not indicative of future results.
Copyright © 2025 William Blair. William Blair is a registered trademark of William Blair & Company, L.L.C. “William Blair” refers to William Blair Investment Management, LLC.